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Step * of Lemma cubical-sigma-intro

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∀G:j⊢. ∀A:{G ⊢ _}. ∀B:{G.A ⊢ _}.  ((∃a:{G ⊢ _:A}. {G ⊢ _:(B)[a]}) ⇒ {G ⊢ _:Σ A B})
BY
{ PresheafMLTTInstance Obid: presheaf-sigma-intro⋅ }

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Latex:

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Latex:
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\mforall{}G:j\mvdash{}.  \mforall{}A:\{G  \mvdash{}  \_\}.  \mforall{}B:\{G.A  \mvdash{}  \_\}.    ((\mexists{}a:\{G  \mvdash{}  \_:A\}.  \{G  \mvdash{}  \_:(B)[a]\})  {}\mRightarrow{}  \{G  \mvdash{}  \_:\mSigma{}  A  B\})


By

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Latex:
PresheafMLTTInstance  Obid:  presheaf-sigma-intro\mcdot{}

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